﻿// ===================================
// <copyright>LogoUI Co.</copyright>
// <author>Vlad Spivak</author>
// <email>mailto:vlads@logoui.co.il</email>
// <created>21/00/10</created>
// <lastedit>Sunday, November 21, 2010</lastedit>

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
// <remarks>Part of this software based on various internet sources, mostly on the works
// of members of Wpf Disciples group http://wpfdisciples.wordpress.com/
// Also project may contain code from the frameworks: 
//        Nito 
//        OpenLightGroup
//        nRoute
// </remarks>
// ====================================================================================//


using System.Windows;
using System.Windows.Controls;

namespace LogoFX.Infra.Interactivity
{
    //todo:replace behaviorbase to be behavior<T>
    /// <summary>
    /// 
    /// </summary>
    public class TreeSelection:BehaviorBase<TreeSelection>
    {
        #region SelectedItem attached property

        public static object GetSelectedItem(DependencyObject obj)
        {
            return (object)obj.GetValue(SelectedItemProperty);
        }

        public static void SetSelectedItem(DependencyObject obj, object value)
        {
            obj.SetValue(SelectedItemProperty, value);
        }

        public static readonly DependencyProperty SelectedItemProperty =
            DependencyProperty.RegisterAttached("SelectedItem", typeof (object), typeof (TreeSelection),
                                                new PropertyMetadata(default(object),OnSelectedItemChanged));

        private static void OnSelectedItemChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
        }

        #endregion

        #region Sync attached property

        public static bool GetSync(DependencyObject obj)
        {
            return (bool)obj.GetValue(SyncProperty);
        }

        public static void SetSync(DependencyObject obj, bool value)
        {
            obj.SetValue(SyncProperty, value);
        }

        public static readonly DependencyProperty SyncProperty =
            DependencyProperty.RegisterAttached("Sync", typeof (bool), typeof (TreeSelection),
                                                new PropertyMetadata(default(bool), OnSyncChanged));

        private static void OnSyncChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if((bool)e.NewValue)
            {
                GetOrAttach(d as FrameworkElement);
            }
            else
            {
                Detach(d as FrameworkElement);
            }
        }

        #endregion
        protected override void OnAttach()
        {
            if(Owner is TreeView)
            {
                ((TreeView)Owner).SelectedItemChanged += TreeSelection_SelectedItemChanged;
            }
            base.OnAttach();
        }

        void TreeSelection_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            SetSelectedItem(sender as DependencyObject,e.NewValue);
        }
        protected override void OnDetach()
        {

            if (Owner is TreeView)
            {
                ((TreeView)Owner).SelectedItemChanged -= TreeSelection_SelectedItemChanged;
            }
            base.OnDetach();
        }
    }
}
